Why is radon used in cancer treatment? 01:45 Why is lead-tin alloy used for making fuse ? 03:09 Name the gas which is used in advertising sign boards. 01:32 Why is argon used in filling electric bulbs? 02:19 Mention the appropriate term corresponding to the following sentence. ... ...
US5093601 * 1989年12月26日 1992年3月3日 Toshiba Lighting & Technology Corporation Double bulb type halogen lamp in which a space between inner and outer bulbs is filled with a weak oxidation gasUS5093601 1989年12月26日 1992年3月3日 Toshiba Lighting & Technology Corporation Double bulb type ...
While it is somewhat common knowledge that metals do this, any material can actually expand upon heating. The difference between what happens to metals and other materials is that this happens much easier for metals and is...
Be careful this time, he said.He was giving the young man another (8) ___ .Jimmy did not break it,so we have millions of bulbs in the world today. As a proverb says, Not the power to (9) ___ ,but its very opposite,the power to forget,is a necessary condition for our existen...
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